1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/reboot.h>
31 #include "load-fragment.h"
32 #include "load-dropin.h"
35 #include "unit-name.h"
36 #include "unit-printf.h"
37 #include "dbus-service.h"
39 #include "dbus-common.h"
40 #include "exit-status.h"
42 #include "path-util.h"
48 #ifdef HAVE_SYSV_COMPAT
50 #define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE)
52 typedef enum RunlevelType {
60 const RunlevelType type;
62 /* Standard SysV runlevels for start-up */
63 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
64 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
65 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
66 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
67 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
69 /* Standard SysV runlevels for shutdown */
70 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
71 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
73 /* Note that the order here matters, as we read the
74 directories in this order, and we want to make sure that
75 sysv_start_priority is known when we first load the
76 unit. And that value we only know from S links. Hence
77 UP must be read before DOWN */
80 #define RUNLEVELS_UP "12345"
83 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
84 [SERVICE_DEAD] = UNIT_INACTIVE,
85 [SERVICE_START_PRE] = UNIT_ACTIVATING,
86 [SERVICE_START] = UNIT_ACTIVATING,
87 [SERVICE_START_POST] = UNIT_ACTIVATING,
88 [SERVICE_RUNNING] = UNIT_ACTIVE,
89 [SERVICE_EXITED] = UNIT_ACTIVE,
90 [SERVICE_RELOAD] = UNIT_RELOADING,
91 [SERVICE_STOP] = UNIT_DEACTIVATING,
92 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
93 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
94 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
95 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
96 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
97 [SERVICE_FAILED] = UNIT_FAILED,
98 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
101 /* For Type=idle we never want to delay any other jobs, hence we
102 * consider idle jobs active as soon as we start working on them */
103 static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = {
104 [SERVICE_DEAD] = UNIT_INACTIVE,
105 [SERVICE_START_PRE] = UNIT_ACTIVE,
106 [SERVICE_START] = UNIT_ACTIVE,
107 [SERVICE_START_POST] = UNIT_ACTIVE,
108 [SERVICE_RUNNING] = UNIT_ACTIVE,
109 [SERVICE_EXITED] = UNIT_ACTIVE,
110 [SERVICE_RELOAD] = UNIT_RELOADING,
111 [SERVICE_STOP] = UNIT_DEACTIVATING,
112 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
113 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
114 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
115 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
116 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
117 [SERVICE_FAILED] = UNIT_FAILED,
118 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
121 static void service_init(Unit *u) {
122 Service *s = SERVICE(u);
125 assert(u->load_state == UNIT_STUB);
127 s->timeout_start_usec = DEFAULT_TIMEOUT_USEC;
128 s->timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
129 s->restart_usec = DEFAULT_RESTART_USEC;
130 s->type = _SERVICE_TYPE_INVALID;
132 watch_init(&s->watchdog_watch);
133 watch_init(&s->timer_watch);
135 #ifdef HAVE_SYSV_COMPAT
136 s->sysv_start_priority = -1;
137 s->sysv_start_priority_from_rcnd = -1;
140 s->guess_main_pid = true;
142 exec_context_init(&s->exec_context);
143 kill_context_init(&s->kill_context);
144 cgroup_context_init(&s->cgroup_context);
146 RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5);
148 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
151 static void service_unwatch_control_pid(Service *s) {
154 if (s->control_pid <= 0)
157 unit_unwatch_pid(UNIT(s), s->control_pid);
161 static void service_unwatch_main_pid(Service *s) {
164 if (s->main_pid <= 0)
167 unit_unwatch_pid(UNIT(s), s->main_pid);
171 static void service_unwatch_pid_file(Service *s) {
172 if (!s->pid_file_pathspec)
175 log_debug_unit(UNIT(s)->id, "Stopping watch for %s's PID file %s",
176 UNIT(s)->id, s->pid_file_pathspec->path);
177 path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
178 path_spec_done(s->pid_file_pathspec);
179 free(s->pid_file_pathspec);
180 s->pid_file_pathspec = NULL;
183 static int service_set_main_pid(Service *s, pid_t pid) {
195 s->main_pid_known = true;
197 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
198 log_warning_unit(UNIT(s)->id,
199 "%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
200 UNIT(s)->id, (unsigned long) pid);
202 s->main_pid_alien = true;
204 s->main_pid_alien = false;
206 exec_status_start(&s->main_exec_status, pid);
211 static void service_close_socket_fd(Service *s) {
214 if (s->socket_fd < 0)
217 close_nointr_nofail(s->socket_fd);
221 static void service_connection_unref(Service *s) {
224 if (!UNIT_ISSET(s->accept_socket))
227 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
228 unit_ref_unset(&s->accept_socket);
231 static void service_stop_watchdog(Service *s) {
234 unit_unwatch_timer(UNIT(s), &s->watchdog_watch);
235 s->watchdog_timestamp.realtime = 0;
236 s->watchdog_timestamp.monotonic = 0;
239 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
241 static void service_handle_watchdog(Service *s) {
247 if (s->watchdog_usec == 0)
250 offset = now(CLOCK_MONOTONIC) - s->watchdog_timestamp.monotonic;
251 if (offset >= s->watchdog_usec) {
252 log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id);
253 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_WATCHDOG);
257 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->watchdog_usec - offset, &s->watchdog_watch);
259 log_warning_unit(UNIT(s)->id,
260 "%s failed to install watchdog timer: %s",
261 UNIT(s)->id, strerror(-r));
264 static void service_reset_watchdog(Service *s) {
267 dual_timestamp_get(&s->watchdog_timestamp);
268 service_handle_watchdog(s);
271 static void service_done(Unit *u) {
272 Service *s = SERVICE(u);
279 #ifdef HAVE_SYSV_COMPAT
280 free(s->sysv_runlevels);
281 s->sysv_runlevels = NULL;
284 free(s->status_text);
285 s->status_text = NULL;
287 cgroup_context_done(&s->cgroup_context);
288 exec_context_done(&s->exec_context, manager_is_reloading_or_reexecuting(u->manager));
289 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
290 s->control_command = NULL;
291 s->main_command = NULL;
293 set_free(s->restart_ignore_status.code);
294 s->restart_ignore_status.code = NULL;
295 set_free(s->restart_ignore_status.signal);
296 s->restart_ignore_status.signal = NULL;
298 set_free(s->success_status.code);
299 s->success_status.code = NULL;
300 set_free(s->success_status.signal);
301 s->success_status.signal = NULL;
303 /* This will leak a process, but at least no memory or any of
305 service_unwatch_main_pid(s);
306 service_unwatch_control_pid(s);
307 service_unwatch_pid_file(s);
310 unit_unwatch_bus_name(u, s->bus_name);
315 service_close_socket_fd(s);
316 service_connection_unref(s);
318 unit_ref_unset(&s->accept_socket);
320 service_stop_watchdog(s);
322 unit_unwatch_timer(u, &s->timer_watch);
325 #ifdef HAVE_SYSV_COMPAT
326 static char *sysv_translate_name(const char *name) {
329 r = new(char, strlen(name) + sizeof(".service"));
333 if (endswith(name, ".sh"))
334 /* Drop .sh suffix */
335 strcpy(stpcpy(r, name) - 3, ".service");
337 /* Normal init script name */
338 strcpy(stpcpy(r, name), ".service");
343 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
345 /* We silently ignore the $ prefix here. According to the LSB
346 * spec it simply indicates whether something is a
347 * standardized name or a distribution-specific one. Since we
348 * just follow what already exists and do not introduce new
349 * uses or names we don't care who introduced a new name. */
351 static const char * const table[] = {
352 /* LSB defined facilities */
354 "network", SPECIAL_NETWORK_TARGET,
355 "named", SPECIAL_NSS_LOOKUP_TARGET,
356 "portmap", SPECIAL_RPCBIND_TARGET,
357 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
359 "time", SPECIAL_TIME_SYNC_TARGET,
369 n = *name == '$' ? name + 1 : name;
371 for (i = 0; i < ELEMENTSOF(table); i += 2) {
373 if (!streq(table[i], n))
379 r = strdup(table[i+1]);
386 /* If we don't know this name, fallback heuristics to figure
387 * out whether something is a target or a service alias. */
390 if (!unit_prefix_is_valid(n))
393 /* Facilities starting with $ are most likely targets */
394 r = unit_name_build(n, NULL, ".target");
395 } else if (filename && streq(name, filename))
396 /* Names equaling the file name of the services are redundant */
399 /* Everything else we assume to be normal service names */
400 r = sysv_translate_name(n);
411 static int sysv_fix_order(Service *s) {
417 if (s->sysv_start_priority < 0)
420 /* For each pair of services where at least one lacks a LSB
421 * header, we use the start priority value to order things. */
423 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
426 bool special_s, special_t;
433 if (UNIT(t)->load_state != UNIT_LOADED)
436 if (t->sysv_start_priority < 0)
439 /* If both units have modern headers we don't care
440 * about the priorities */
441 if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
442 (UNIT(t)->fragment_path || t->sysv_has_lsb))
445 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
446 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
448 if (special_t && !special_s)
450 else if (special_s && !special_t)
452 else if (t->sysv_start_priority < s->sysv_start_priority)
454 else if (t->sysv_start_priority > s->sysv_start_priority)
459 /* FIXME: Maybe we should compare the name here lexicographically? */
461 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
468 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
471 if (!(c = new0(ExecCommand, 1)))
474 if (!(c->path = strdup(path))) {
479 if (!(c->argv = strv_new(path, arg1, NULL))) {
488 static int sysv_exec_commands(Service *s, const bool supports_reload) {
493 assert(UNIT(s)->source_path);
495 c = exec_command_new(UNIT(s)->source_path, "start");
498 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
500 c = exec_command_new(UNIT(s)->source_path, "stop");
503 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
505 if (supports_reload) {
506 c = exec_command_new(UNIT(s)->source_path, "reload");
509 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
515 static bool usage_contains_reload(const char *line) {
516 return (strcasestr(line, "{reload|") ||
517 strcasestr(line, "{reload}") ||
518 strcasestr(line, "{reload\"") ||
519 strcasestr(line, "|reload|") ||
520 strcasestr(line, "|reload}") ||
521 strcasestr(line, "|reload\""));
524 static int service_load_sysv_path(Service *s, const char *path) {
536 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
538 bool supports_reload = false;
545 f = fopen(path, "re");
547 r = errno == ENOENT ? 0 : -errno;
551 if (fstat(fileno(f), &st) < 0) {
556 free(u->source_path);
557 u->source_path = strdup(path);
558 if (!u->source_path) {
562 u->source_mtime = timespec_load(&st.st_mtim);
564 if (null_or_empty(&st)) {
565 u->load_state = UNIT_MASKED;
573 char l[LINE_MAX], *t;
575 if (!fgets(l, sizeof(l), f)) {
580 log_error_unit(u->id,
581 "Failed to read configuration file '%s': %s",
590 /* Try to figure out whether this init script supports
591 * the reload operation. This heuristic looks for
592 * "Usage" lines which include the reload option. */
593 if ( state == USAGE_CONTINUATION ||
594 (state == NORMAL && strcasestr(t, "usage"))) {
595 if (usage_contains_reload(t)) {
596 supports_reload = true;
598 } else if (t[strlen(t)-1] == '\\')
599 state = USAGE_CONTINUATION;
607 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
609 s->sysv_has_lsb = true;
613 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
619 t += strspn(t, WHITESPACE);
621 if (state == NORMAL) {
623 /* Try to parse Red Hat style chkconfig headers */
625 if (startswith_no_case(t, "chkconfig:")) {
627 char runlevels[16], *k;
631 if (sscanf(t+10, "%15s %i %*i",
633 &start_priority) != 2) {
635 log_warning_unit(u->id,
636 "[%s:%u] Failed to parse chkconfig line. Ignoring.",
641 /* A start priority gathered from the
642 * symlink farms is preferred over the
643 * data from the LSB header. */
644 if (start_priority < 0 || start_priority > 99)
645 log_warning_unit(u->id,
646 "[%s:%u] Start priority out of range. Ignoring.",
649 s->sysv_start_priority = start_priority;
651 char_array_0(runlevels);
652 k = delete_chars(runlevels, WHITESPACE "-");
657 if (!(d = strdup(k))) {
662 free(s->sysv_runlevels);
663 s->sysv_runlevels = d;
666 } else if (startswith_no_case(t, "description:")) {
668 size_t k = strlen(t);
672 if (t[k-1] == '\\') {
677 if ((j = strstrip(t+12)) && *j) {
678 if (!(d = strdup(j))) {
685 free(chkconfig_description);
686 chkconfig_description = d;
688 } else if (startswith_no_case(t, "pidfile:")) {
695 if (!path_is_absolute(fn)) {
696 log_warning_unit(u->id,
697 "[%s:%u] PID file not absolute. Ignoring.",
702 if (!(fn = strdup(fn))) {
711 } else if (state == DESCRIPTION) {
713 /* Try to parse Red Hat style description
716 size_t k = strlen(t);
724 if ((j = strstrip(t)) && *j) {
727 if (chkconfig_description)
728 d = strjoin(chkconfig_description, " ", j, NULL);
737 free(chkconfig_description);
738 chkconfig_description = d;
741 } else if (state == LSB || state == LSB_DESCRIPTION) {
743 if (startswith_no_case(t, "Provides:")) {
749 FOREACH_WORD_QUOTED(w, z, t+9, i) {
752 if (!(n = strndup(w, z))) {
757 r = sysv_translate_facility(n, path_get_file_name(path), &m);
766 if (unit_name_to_type(m) == UNIT_SERVICE)
767 r = unit_merge_by_name(u, m);
774 * indication that the
776 * now available. This
779 * targets do NOT pull
782 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
785 log_error_unit(u->id,
786 "[%s:%u] Failed to add LSB Provides name %s, ignoring: %s",
787 path, line, m, strerror(-r));
792 } else if (startswith_no_case(t, "Required-Start:") ||
793 startswith_no_case(t, "Should-Start:") ||
794 startswith_no_case(t, "X-Start-Before:") ||
795 startswith_no_case(t, "X-Start-After:")) {
801 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
804 if (!(n = strndup(w, z))) {
809 r = sysv_translate_facility(n, path_get_file_name(path), &m);
811 log_error_unit(u->id,
812 "[%s:%u] Failed to translate LSB dependency %s, ignoring: %s",
813 path, line, n, strerror(-r));
823 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
826 log_error_unit(u->id, "[%s:%u] Failed to add dependency on %s, ignoring: %s",
827 path, line, m, strerror(-r));
831 } else if (startswith_no_case(t, "Default-Start:")) {
836 k = delete_chars(t+14, WHITESPACE "-");
839 if (!(d = strdup(k))) {
844 free(s->sysv_runlevels);
845 s->sysv_runlevels = d;
848 } else if (startswith_no_case(t, "Description:")) {
851 state = LSB_DESCRIPTION;
853 if ((j = strstrip(t+12)) && *j) {
854 if (!(d = strdup(j))) {
861 free(long_description);
862 long_description = d;
864 } else if (startswith_no_case(t, "Short-Description:")) {
869 if ((j = strstrip(t+18)) && *j) {
870 if (!(d = strdup(j))) {
877 free(short_description);
878 short_description = d;
880 } else if (state == LSB_DESCRIPTION) {
882 if (startswith(l, "#\t") || startswith(l, "# ")) {
885 if ((j = strstrip(t)) && *j) {
888 if (long_description)
889 d = strjoin(long_description, " ", t, NULL);
898 free(long_description);
899 long_description = d;
908 if ((r = sysv_exec_commands(s, supports_reload)) < 0)
911 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
912 /* If there a runlevels configured for this service
913 * but none of the standard ones, then we assume this
914 * is some special kind of service (which might be
915 * needed for early boot) and don't create any links
918 UNIT(s)->default_dependencies = false;
920 /* Don't timeout special services during boot (like fsck) */
921 s->timeout_start_usec = 0;
922 s->timeout_stop_usec = 0;
924 s->timeout_start_usec = DEFAULT_SYSV_TIMEOUT_USEC;
925 s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC;
928 /* Special setting for all SysV services */
929 s->type = SERVICE_FORKING;
930 s->remain_after_exit = !s->pid_file;
931 s->guess_main_pid = false;
932 s->restart = SERVICE_RESTART_NO;
933 s->exec_context.ignore_sigpipe = false;
934 s->kill_context.kill_mode = KILL_PROCESS;
936 /* We use the long description only if
937 * no short description is set. */
939 if (short_description)
940 description = short_description;
941 else if (chkconfig_description)
942 description = chkconfig_description;
943 else if (long_description)
944 description = long_description;
951 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
959 /* The priority that has been set in /etc/rcN.d/ hierarchies
960 * takes precedence over what is stored as default in the LSB
962 if (s->sysv_start_priority_from_rcnd >= 0)
963 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
965 u->load_state = UNIT_LOADED;
973 free(short_description);
974 free(long_description);
975 free(chkconfig_description);
980 static int service_load_sysv_name(Service *s, const char *name) {
986 /* For SysV services we strip the *.sh suffixes. */
987 if (endswith(name, ".sh.service"))
990 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
994 path = strjoin(*p, "/", name, NULL);
998 assert(endswith(path, ".service"));
999 path[strlen(path)-8] = 0;
1001 r = service_load_sysv_path(s, path);
1003 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1004 /* Try *.sh source'able init scripts */
1005 strcat(path, ".sh");
1006 r = service_load_sysv_path(s, path);
1013 if (UNIT(s)->load_state != UNIT_STUB)
1020 static int service_load_sysv(Service *s) {
1027 /* Load service data from SysV init scripts, preferably with
1028 * LSB headers ... */
1030 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
1033 if ((t = UNIT(s)->id))
1034 if ((r = service_load_sysv_name(s, t)) < 0)
1037 if (UNIT(s)->load_state == UNIT_STUB)
1038 SET_FOREACH(t, UNIT(s)->names, i) {
1039 if (t == UNIT(s)->id)
1042 if ((r = service_load_sysv_name(s, t)) < 0)
1045 if (UNIT(s)->load_state != UNIT_STUB)
1053 static int fsck_fix_order(Service *s) {
1059 if (s->fsck_passno <= 0)
1062 /* For each pair of services where both have an fsck priority
1063 * we order things based on it. */
1065 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
1074 if (UNIT(t)->load_state != UNIT_LOADED)
1077 if (t->fsck_passno <= 0)
1080 if (t->fsck_passno < s->fsck_passno)
1082 else if (t->fsck_passno > s->fsck_passno)
1087 r = unit_add_dependency(UNIT(s), d, UNIT(t), true);
1095 static int service_verify(Service *s) {
1098 if (UNIT(s)->load_state != UNIT_LOADED)
1101 if (!s->exec_command[SERVICE_EXEC_START]) {
1102 log_error_unit(UNIT(s)->id,
1103 "%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
1107 if (s->type != SERVICE_ONESHOT &&
1108 s->exec_command[SERVICE_EXEC_START]->command_next) {
1109 log_error_unit(UNIT(s)->id,
1110 "%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1114 if (s->type == SERVICE_DBUS && !s->bus_name) {
1115 log_error_unit(UNIT(s)->id,
1116 "%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
1120 if (s->bus_name && s->type != SERVICE_DBUS)
1121 log_warning_unit(UNIT(s)->id,
1122 "%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id);
1124 if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) {
1125 log_error_unit(UNIT(s)->id,
1126 "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
1133 static int service_add_default_dependencies(Service *s) {
1138 /* Add a number of automatic dependencies useful for the
1139 * majority of services. */
1141 /* First, pull in base system */
1142 if (UNIT(s)->manager->running_as == SYSTEMD_SYSTEM) {
1143 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1144 SPECIAL_BASIC_TARGET, NULL, true);
1148 } else if (UNIT(s)->manager->running_as == SYSTEMD_USER) {
1149 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1150 SPECIAL_SOCKETS_TARGET, NULL, true);
1154 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1155 SPECIAL_TIMERS_TARGET, NULL, true);
1159 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
1160 SPECIAL_PATHS_TARGET, NULL, true);
1165 /* Second, activate normal shutdown */
1166 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS,
1167 SPECIAL_SHUTDOWN_TARGET, NULL, true);
1171 static void service_fix_output(Service *s) {
1174 /* If nothing has been explicitly configured, patch default
1175 * output in. If input is socket/tty we avoid this however,
1176 * since in that case we want output to default to the same
1177 * place as we read input from. */
1179 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1180 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1181 s->exec_context.std_input == EXEC_INPUT_NULL)
1182 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1184 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1185 s->exec_context.std_input == EXEC_INPUT_NULL)
1186 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1189 static int service_load(Unit *u) {
1191 Service *s = SERVICE(u);
1195 /* Load a .service file */
1196 r = unit_load_fragment(u);
1200 #ifdef HAVE_SYSV_COMPAT
1201 /* Load a classic init script as a fallback, if we couldn't find anything */
1202 if (u->load_state == UNIT_STUB) {
1203 r = service_load_sysv(s);
1209 /* Still nothing found? Then let's give up */
1210 if (u->load_state == UNIT_STUB)
1213 /* This is a new unit? Then let's add in some extras */
1214 if (u->load_state == UNIT_LOADED) {
1216 /* We were able to load something, then let's add in
1217 * the dropin directories. */
1218 r = unit_load_dropin(u);
1222 if (s->type == _SERVICE_TYPE_INVALID)
1223 s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
1225 /* Oneshot services have disabled start timeout by default */
1226 if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
1227 s->timeout_start_usec = 0;
1229 service_fix_output(s);
1231 r = unit_add_exec_dependencies(u, &s->exec_context);
1235 r = unit_add_default_slice(u);
1239 #ifdef HAVE_SYSV_COMPAT
1240 r = sysv_fix_order(s);
1245 r = fsck_fix_order(s);
1250 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1253 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1254 s->notify_access = NOTIFY_MAIN;
1256 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
1257 s->notify_access = NOTIFY_MAIN;
1259 if (s->type == SERVICE_DBUS || s->bus_name) {
1260 r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES,
1261 SPECIAL_DBUS_SOCKET, NULL, true);
1266 if (UNIT(s)->default_dependencies) {
1267 r = service_add_default_dependencies(s);
1272 r = unit_exec_context_defaults(u, &s->exec_context);
1277 return service_verify(s);
1280 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1282 ServiceExecCommand c;
1283 Service *s = SERVICE(u);
1284 const char *prefix2;
1285 _cleanup_free_ char *p2 = NULL;
1289 p2 = strappend(prefix, "\t");
1290 prefix2 = p2 ? p2 : prefix;
1293 "%sService State: %s\n"
1295 "%sReload Result: %s\n"
1296 "%sPermissionsStartOnly: %s\n"
1297 "%sRootDirectoryStartOnly: %s\n"
1298 "%sRemainAfterExit: %s\n"
1299 "%sGuessMainPID: %s\n"
1302 "%sNotifyAccess: %s\n",
1303 prefix, service_state_to_string(s->state),
1304 prefix, service_result_to_string(s->result),
1305 prefix, service_result_to_string(s->reload_result),
1306 prefix, yes_no(s->permissions_start_only),
1307 prefix, yes_no(s->root_directory_start_only),
1308 prefix, yes_no(s->remain_after_exit),
1309 prefix, yes_no(s->guess_main_pid),
1310 prefix, service_type_to_string(s->type),
1311 prefix, service_restart_to_string(s->restart),
1312 prefix, notify_access_to_string(s->notify_access));
1314 if (s->control_pid > 0)
1316 "%sControl PID: %lu\n",
1317 prefix, (unsigned long) s->control_pid);
1319 if (s->main_pid > 0)
1322 "%sMain PID Known: %s\n"
1323 "%sMain PID Alien: %s\n",
1324 prefix, (unsigned long) s->main_pid,
1325 prefix, yes_no(s->main_pid_known),
1326 prefix, yes_no(s->main_pid_alien));
1331 prefix, s->pid_file);
1336 "%sBus Name Good: %s\n",
1337 prefix, s->bus_name,
1338 prefix, yes_no(s->bus_name_good));
1340 kill_context_dump(&s->kill_context, f, prefix);
1341 exec_context_dump(&s->exec_context, f, prefix);
1343 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1345 if (!s->exec_command[c])
1348 fprintf(f, "%s-> %s:\n",
1349 prefix, service_exec_command_to_string(c));
1351 exec_command_dump_list(s->exec_command[c], f, prefix2);
1354 #ifdef HAVE_SYSV_COMPAT
1357 "%sSysV Init Script has LSB Header: %s\n"
1358 "%sSysVEnabled: %s\n",
1359 prefix, yes_no(s->sysv_has_lsb),
1360 prefix, yes_no(s->sysv_enabled));
1362 if (s->sysv_start_priority >= 0)
1364 "%sSysVStartPriority: %i\n",
1365 prefix, s->sysv_start_priority);
1367 if (s->sysv_runlevels)
1368 fprintf(f, "%sSysVRunLevels: %s\n",
1369 prefix, s->sysv_runlevels);
1372 if (s->fsck_passno > 0)
1374 "%sFsckPassNo: %i\n",
1375 prefix, s->fsck_passno);
1378 fprintf(f, "%sStatus Text: %s\n",
1379 prefix, s->status_text);
1382 static int service_load_pid_file(Service *s, bool may_warn) {
1383 _cleanup_free_ char *k = NULL;
1392 r = read_one_line_file(s->pid_file, &k);
1395 log_info_unit(UNIT(s)->id,
1396 "PID file %s not readable (yet?) after %s.",
1397 s->pid_file, service_state_to_string(s->state));
1401 r = parse_pid(k, &pid);
1404 log_info_unit(UNIT(s)->id,
1405 "Failed to read PID from file %s: %s",
1406 s->pid_file, strerror(-r));
1410 if (kill(pid, 0) < 0 && errno != EPERM) {
1412 log_info_unit(UNIT(s)->id,
1413 "PID %lu read from file %s does not exist.",
1414 (unsigned long) pid, s->pid_file);
1418 if (s->main_pid_known) {
1419 if (pid == s->main_pid)
1422 log_debug_unit(UNIT(s)->id,
1423 "Main PID changing: %lu -> %lu",
1424 (unsigned long) s->main_pid, (unsigned long) pid);
1425 service_unwatch_main_pid(s);
1426 s->main_pid_known = false;
1428 log_debug_unit(UNIT(s)->id,
1429 "Main PID loaded: %lu", (unsigned long) pid);
1431 r = service_set_main_pid(s, pid);
1435 r = unit_watch_pid(UNIT(s), pid);
1437 /* FIXME: we need to do something here */
1438 log_warning_unit(UNIT(s)->id,
1439 "Failed to watch PID %lu from service %s",
1440 (unsigned long) pid, UNIT(s)->id);
1447 static int service_search_main_pid(Service *s) {
1453 /* If we know it anyway, don't ever fallback to unreliable
1455 if (s->main_pid_known)
1458 if (!s->guess_main_pid)
1461 assert(s->main_pid <= 0);
1463 pid = unit_search_main_pid(UNIT(s));
1467 log_debug_unit(UNIT(s)->id,
1468 "Main PID guessed: %lu", (unsigned long) pid);
1469 r = service_set_main_pid(s, pid);
1473 r = unit_watch_pid(UNIT(s), pid);
1475 /* FIXME: we need to do something here */
1476 log_warning_unit(UNIT(s)->id,
1477 "Failed to watch PID %lu from service %s",
1478 (unsigned long) pid, UNIT(s)->id);
1484 static void service_notify_sockets_dead(Service *s, bool failed_permanent) {
1490 /* Notifies all our sockets when we die */
1492 if (s->socket_fd >= 0)
1495 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i)
1496 if (u->type == UNIT_SOCKET)
1497 socket_notify_service_dead(SOCKET(u), failed_permanent);
1502 static void service_set_state(Service *s, ServiceState state) {
1503 ServiceState old_state;
1504 const UnitActiveState *table;
1507 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1509 old_state = s->state;
1512 service_unwatch_pid_file(s);
1514 if (state != SERVICE_START_PRE &&
1515 state != SERVICE_START &&
1516 state != SERVICE_START_POST &&
1517 state != SERVICE_RELOAD &&
1518 state != SERVICE_STOP &&
1519 state != SERVICE_STOP_SIGTERM &&
1520 state != SERVICE_STOP_SIGKILL &&
1521 state != SERVICE_STOP_POST &&
1522 state != SERVICE_FINAL_SIGTERM &&
1523 state != SERVICE_FINAL_SIGKILL &&
1524 state != SERVICE_AUTO_RESTART)
1525 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1527 if (state != SERVICE_START &&
1528 state != SERVICE_START_POST &&
1529 state != SERVICE_RUNNING &&
1530 state != SERVICE_RELOAD &&
1531 state != SERVICE_STOP &&
1532 state != SERVICE_STOP_SIGTERM &&
1533 state != SERVICE_STOP_SIGKILL) {
1534 service_unwatch_main_pid(s);
1535 s->main_command = NULL;
1538 if (state != SERVICE_START_PRE &&
1539 state != SERVICE_START &&
1540 state != SERVICE_START_POST &&
1541 state != SERVICE_RELOAD &&
1542 state != SERVICE_STOP &&
1543 state != SERVICE_STOP_SIGTERM &&
1544 state != SERVICE_STOP_SIGKILL &&
1545 state != SERVICE_STOP_POST &&
1546 state != SERVICE_FINAL_SIGTERM &&
1547 state != SERVICE_FINAL_SIGKILL) {
1548 service_unwatch_control_pid(s);
1549 s->control_command = NULL;
1550 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1553 if (state == SERVICE_FAILED)
1554 service_notify_sockets_dead(s, s->result == SERVICE_FAILURE_START_LIMIT);
1556 if (state == SERVICE_DEAD ||
1557 state == SERVICE_STOP ||
1558 state == SERVICE_STOP_SIGTERM ||
1559 state == SERVICE_STOP_SIGKILL ||
1560 state == SERVICE_STOP_POST ||
1561 state == SERVICE_FINAL_SIGTERM ||
1562 state == SERVICE_FINAL_SIGKILL ||
1563 state == SERVICE_AUTO_RESTART)
1564 service_notify_sockets_dead(s, false);
1566 if (state != SERVICE_START_PRE &&
1567 state != SERVICE_START &&
1568 state != SERVICE_START_POST &&
1569 state != SERVICE_RUNNING &&
1570 state != SERVICE_RELOAD &&
1571 state != SERVICE_STOP &&
1572 state != SERVICE_STOP_SIGTERM &&
1573 state != SERVICE_STOP_SIGKILL &&
1574 state != SERVICE_STOP_POST &&
1575 state != SERVICE_FINAL_SIGTERM &&
1576 state != SERVICE_FINAL_SIGKILL &&
1577 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1578 service_close_socket_fd(s);
1579 service_connection_unref(s);
1582 if (state == SERVICE_STOP || state == SERVICE_STOP_SIGTERM)
1583 service_stop_watchdog(s);
1585 /* For the inactive states unit_notify() will trim the cgroup,
1586 * but for exit we have to do that ourselves... */
1587 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1588 unit_destroy_cgroup(UNIT(s));
1590 if (old_state != state)
1591 log_debug_unit(UNIT(s)->id,
1592 "%s changed %s -> %s", UNIT(s)->id,
1593 service_state_to_string(old_state),
1594 service_state_to_string(state));
1596 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1597 s->reload_result = SERVICE_SUCCESS;
1600 static int service_coldplug(Unit *u) {
1601 Service *s = SERVICE(u);
1605 assert(s->state == SERVICE_DEAD);
1607 if (s->deserialized_state != s->state) {
1609 if (s->deserialized_state == SERVICE_START_PRE ||
1610 s->deserialized_state == SERVICE_START ||
1611 s->deserialized_state == SERVICE_START_POST ||
1612 s->deserialized_state == SERVICE_RELOAD ||
1613 s->deserialized_state == SERVICE_STOP ||
1614 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1615 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1616 s->deserialized_state == SERVICE_STOP_POST ||
1617 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1618 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1619 s->deserialized_state == SERVICE_AUTO_RESTART) {
1621 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_start_usec > 0) {
1624 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_start_usec;
1626 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, k, &s->timer_watch);
1632 if ((s->deserialized_state == SERVICE_START &&
1633 (s->type == SERVICE_FORKING ||
1634 s->type == SERVICE_DBUS ||
1635 s->type == SERVICE_ONESHOT ||
1636 s->type == SERVICE_NOTIFY)) ||
1637 s->deserialized_state == SERVICE_START_POST ||
1638 s->deserialized_state == SERVICE_RUNNING ||
1639 s->deserialized_state == SERVICE_RELOAD ||
1640 s->deserialized_state == SERVICE_STOP ||
1641 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1642 s->deserialized_state == SERVICE_STOP_SIGKILL)
1643 if (s->main_pid > 0) {
1644 r = unit_watch_pid(UNIT(s), s->main_pid);
1649 if (s->deserialized_state == SERVICE_START_PRE ||
1650 s->deserialized_state == SERVICE_START ||
1651 s->deserialized_state == SERVICE_START_POST ||
1652 s->deserialized_state == SERVICE_RELOAD ||
1653 s->deserialized_state == SERVICE_STOP ||
1654 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1655 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1656 s->deserialized_state == SERVICE_STOP_POST ||
1657 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1658 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1659 if (s->control_pid > 0) {
1660 r = unit_watch_pid(UNIT(s), s->control_pid);
1665 if (s->deserialized_state == SERVICE_START_POST ||
1666 s->deserialized_state == SERVICE_RUNNING)
1667 service_handle_watchdog(s);
1669 service_set_state(s, s->deserialized_state);
1674 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1678 unsigned rn_fds = 0;
1685 if (s->socket_fd >= 0)
1688 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1693 if (u->type != UNIT_SOCKET)
1698 r = socket_collect_fds(sock, &cfds, &cn_fds);
1711 t = new(int, rn_fds+cn_fds);
1718 memcpy(t, rfds, rn_fds * sizeof(int));
1719 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1724 rn_fds = rn_fds+cn_fds;
1739 static int service_spawn(
1744 bool apply_permissions,
1746 bool apply_tty_stdin,
1747 bool set_notify_socket,
1754 _cleanup_free_ int *fdsbuf = NULL;
1755 unsigned n_fds = 0, n_env = 0;
1756 _cleanup_strv_free_ char
1757 **argv = NULL, **final_env = NULL, **our_env = NULL;
1764 unit_realize_cgroup(UNIT(s));
1767 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1768 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1769 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1771 if (s->socket_fd >= 0) {
1772 fds = &s->socket_fd;
1775 r = service_collect_fds(s, &fdsbuf, &n_fds);
1783 if (timeout && s->timeout_start_usec) {
1784 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true,
1785 s->timeout_start_usec, &s->timer_watch);
1789 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1791 argv = unit_full_printf_strv(UNIT(s), c->argv);
1797 our_env = new0(char*, 5);
1803 if (set_notify_socket)
1804 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1809 if (s->main_pid > 0)
1810 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1815 if (s->watchdog_usec > 0)
1816 if (asprintf(our_env + n_env++, "WATCHDOG_USEC=%llu", (unsigned long long) s->watchdog_usec) < 0) {
1821 if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
1822 if (asprintf(our_env + n_env++, "MANAGERPID=%lu", (unsigned long) getpid()) < 0) {
1827 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1833 if (is_control && UNIT(s)->cgroup_path) {
1834 path = strappenda(UNIT(s)->cgroup_path, "/control");
1835 cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
1837 path = UNIT(s)->cgroup_path;
1847 UNIT(s)->manager->confirm_spawn,
1848 UNIT(s)->cgroup_mask,
1851 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1856 r = unit_watch_pid(UNIT(s), pid);
1858 /* FIXME: we need to do something here */
1867 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1872 static int main_pid_good(Service *s) {
1875 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1878 /* If we know the pid file, then lets just check if it is
1880 if (s->main_pid_known) {
1882 /* If it's an alien child let's check if it is still
1884 if (s->main_pid_alien && s->main_pid > 0)
1885 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1887 /* .. otherwise assume we'll get a SIGCHLD for it,
1888 * which we really should wait for to collect exit
1889 * status and code */
1890 return s->main_pid > 0;
1893 /* We don't know the pid */
1897 _pure_ static int control_pid_good(Service *s) {
1900 return s->control_pid > 0;
1903 static int cgroup_good(Service *s) {
1908 if (!UNIT(s)->cgroup_path)
1911 r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true);
1918 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1922 if (f != SERVICE_SUCCESS)
1925 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1927 if (allow_restart &&
1928 !s->forbid_restart &&
1929 (s->restart == SERVICE_RESTART_ALWAYS ||
1930 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1931 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1932 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1933 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1934 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1935 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1936 (s->result != SERVICE_FAILURE_SIGNAL ||
1937 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))
1940 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->restart_usec, &s->timer_watch);
1944 service_set_state(s, SERVICE_AUTO_RESTART);
1947 s->forbid_restart = false;
1949 /* we want fresh tmpdirs in case service is started again immediately */
1950 exec_context_tmp_dirs_done(&s->exec_context);
1955 log_warning_unit(UNIT(s)->id,
1956 "%s failed to run install restart timer: %s",
1957 UNIT(s)->id, strerror(-r));
1958 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1961 static void service_enter_stop_post(Service *s, ServiceResult f) {
1965 if (f != SERVICE_SUCCESS)
1968 service_unwatch_control_pid(s);
1970 s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
1971 if (s->control_command) {
1972 s->control_command_id = SERVICE_EXEC_STOP_POST;
1974 r = service_spawn(s,
1978 !s->permissions_start_only,
1979 !s->root_directory_start_only,
1988 service_set_state(s, SERVICE_STOP_POST);
1990 service_enter_dead(s, SERVICE_SUCCESS, true);
1995 log_warning_unit(UNIT(s)->id,
1996 "%s failed to run 'stop-post' task: %s",
1997 UNIT(s)->id, strerror(-r));
1998 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2001 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
2006 if (f != SERVICE_SUCCESS)
2009 r = unit_kill_context(
2012 state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM,
2020 if (s->timeout_stop_usec > 0) {
2021 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true,
2022 s->timeout_stop_usec, &s->timer_watch);
2027 service_set_state(s, state);
2028 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2029 service_enter_stop_post(s, SERVICE_SUCCESS);
2031 service_enter_dead(s, SERVICE_SUCCESS, true);
2036 log_warning_unit(UNIT(s)->id,
2037 "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
2039 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2040 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
2042 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2045 static void service_enter_stop(Service *s, ServiceResult f) {
2050 if (f != SERVICE_SUCCESS)
2053 service_unwatch_control_pid(s);
2055 s->control_command = s->exec_command[SERVICE_EXEC_STOP];
2056 if (s->control_command) {
2057 s->control_command_id = SERVICE_EXEC_STOP;
2059 r = service_spawn(s,
2063 !s->permissions_start_only,
2064 !s->root_directory_start_only,
2072 service_set_state(s, SERVICE_STOP);
2074 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2079 log_warning_unit(UNIT(s)->id,
2080 "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2081 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2084 static void service_enter_running(Service *s, ServiceResult f) {
2085 int main_pid_ok, cgroup_ok;
2088 if (f != SERVICE_SUCCESS)
2091 main_pid_ok = main_pid_good(s);
2092 cgroup_ok = cgroup_good(s);
2094 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2095 (s->bus_name_good || s->type != SERVICE_DBUS))
2096 service_set_state(s, SERVICE_RUNNING);
2097 else if (s->remain_after_exit)
2098 service_set_state(s, SERVICE_EXITED);
2100 service_enter_stop(s, SERVICE_SUCCESS);
2103 static void service_enter_start_post(Service *s) {
2107 service_unwatch_control_pid(s);
2109 if (s->watchdog_usec > 0)
2110 service_reset_watchdog(s);
2112 s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
2113 if (s->control_command) {
2114 s->control_command_id = SERVICE_EXEC_START_POST;
2116 r = service_spawn(s,
2120 !s->permissions_start_only,
2121 !s->root_directory_start_only,
2129 service_set_state(s, SERVICE_START_POST);
2131 service_enter_running(s, SERVICE_SUCCESS);
2136 log_warning_unit(UNIT(s)->id,
2137 "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2138 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2141 static void service_kill_control_processes(Service *s) {
2144 if (!UNIT(s)->cgroup_path)
2147 p = strappenda(UNIT(s)->cgroup_path, "/control");
2148 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL);
2151 static void service_enter_start(Service *s) {
2158 assert(s->exec_command[SERVICE_EXEC_START]);
2159 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2161 if (s->type == SERVICE_FORKING)
2162 service_unwatch_control_pid(s);
2164 service_unwatch_main_pid(s);
2166 /* We want to ensure that nobody leaks processes from
2167 * START_PRE here, so let's go on a killing spree, People
2168 * should not spawn long running processes from START_PRE. */
2169 service_kill_control_processes(s);
2171 if (s->type == SERVICE_FORKING) {
2172 s->control_command_id = SERVICE_EXEC_START;
2173 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2175 s->main_command = NULL;
2177 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2178 s->control_command = NULL;
2180 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2183 r = service_spawn(s,
2185 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
2186 s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2191 s->notify_access != NOTIFY_NONE,
2197 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2198 /* For simple services we immediately start
2199 * the START_POST binaries. */
2201 service_set_main_pid(s, pid);
2202 service_enter_start_post(s);
2204 } else if (s->type == SERVICE_FORKING) {
2206 /* For forking services we wait until the start
2207 * process exited. */
2209 s->control_pid = pid;
2210 service_set_state(s, SERVICE_START);
2212 } else if (s->type == SERVICE_ONESHOT ||
2213 s->type == SERVICE_DBUS ||
2214 s->type == SERVICE_NOTIFY) {
2216 /* For oneshot services we wait until the start
2217 * process exited, too, but it is our main process. */
2219 /* For D-Bus services we know the main pid right away,
2220 * but wait for the bus name to appear on the
2221 * bus. Notify services are similar. */
2223 service_set_main_pid(s, pid);
2224 service_set_state(s, SERVICE_START);
2226 assert_not_reached("Unknown service type");
2231 log_warning_unit(UNIT(s)->id,
2232 "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2233 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2236 static void service_enter_start_pre(Service *s) {
2241 service_unwatch_control_pid(s);
2243 s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
2244 if (s->control_command) {
2245 /* Before we start anything, let's clear up what might
2246 * be left from previous runs. */
2247 service_kill_control_processes(s);
2249 s->control_command_id = SERVICE_EXEC_START_PRE;
2251 r = service_spawn(s,
2255 !s->permissions_start_only,
2256 !s->root_directory_start_only,
2264 service_set_state(s, SERVICE_START_PRE);
2266 service_enter_start(s);
2271 log_warning_unit(UNIT(s)->id,
2272 "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2273 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2276 static void service_enter_restart(Service *s) {
2281 dbus_error_init(&error);
2283 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2284 /* Don't restart things if we are going down anyway */
2285 log_info_unit(UNIT(s)->id,
2286 "Stop job pending for unit, delaying automatic restart.");
2288 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->restart_usec, &s->timer_watch);
2295 /* Any units that are bound to this service must also be
2296 * restarted. We use JOB_RESTART (instead of the more obvious
2297 * JOB_START) here so that those dependency jobs will be added
2299 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2303 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2304 * it will be canceled as part of the service_stop() call that
2305 * is executed as part of JOB_RESTART. */
2307 log_debug_unit(UNIT(s)->id,
2308 "%s scheduled restart job.", UNIT(s)->id);
2312 log_warning_unit(UNIT(s)->id,
2313 "%s failed to schedule restart job: %s",
2314 UNIT(s)->id, bus_error(&error, -r));
2315 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2317 dbus_error_free(&error);
2320 static void service_enter_reload(Service *s) {
2325 service_unwatch_control_pid(s);
2327 s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
2328 if (s->control_command) {
2329 s->control_command_id = SERVICE_EXEC_RELOAD;
2331 r = service_spawn(s,
2335 !s->permissions_start_only,
2336 !s->root_directory_start_only,
2344 service_set_state(s, SERVICE_RELOAD);
2346 service_enter_running(s, SERVICE_SUCCESS);
2351 log_warning_unit(UNIT(s)->id,
2352 "%s failed to run 'reload' task: %s",
2353 UNIT(s)->id, strerror(-r));
2354 s->reload_result = SERVICE_FAILURE_RESOURCES;
2355 service_enter_running(s, SERVICE_SUCCESS);
2358 static void service_run_next_control(Service *s) {
2362 assert(s->control_command);
2363 assert(s->control_command->command_next);
2365 assert(s->control_command_id != SERVICE_EXEC_START);
2367 s->control_command = s->control_command->command_next;
2368 service_unwatch_control_pid(s);
2370 r = service_spawn(s,
2374 !s->permissions_start_only,
2375 !s->root_directory_start_only,
2376 s->control_command_id == SERVICE_EXEC_START_PRE ||
2377 s->control_command_id == SERVICE_EXEC_STOP_POST,
2387 log_warning_unit(UNIT(s)->id,
2388 "%s failed to run next control task: %s",
2389 UNIT(s)->id, strerror(-r));
2391 if (s->state == SERVICE_START_PRE)
2392 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2393 else if (s->state == SERVICE_STOP)
2394 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2395 else if (s->state == SERVICE_STOP_POST)
2396 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2397 else if (s->state == SERVICE_RELOAD) {
2398 s->reload_result = SERVICE_FAILURE_RESOURCES;
2399 service_enter_running(s, SERVICE_SUCCESS);
2401 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2404 static void service_run_next_main(Service *s) {
2409 assert(s->main_command);
2410 assert(s->main_command->command_next);
2411 assert(s->type == SERVICE_ONESHOT);
2413 s->main_command = s->main_command->command_next;
2414 service_unwatch_main_pid(s);
2416 r = service_spawn(s,
2423 s->notify_access != NOTIFY_NONE,
2429 service_set_main_pid(s, pid);
2434 log_warning_unit(UNIT(s)->id,
2435 "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2436 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2439 static int service_start_limit_test(Service *s) {
2442 if (ratelimit_test(&s->start_limit))
2445 switch (s->start_limit_action) {
2447 case SERVICE_START_LIMIT_NONE:
2448 log_warning_unit(UNIT(s)->id,
2449 "%s start request repeated too quickly, refusing to start.",
2453 case SERVICE_START_LIMIT_REBOOT: {
2457 dbus_error_init(&error);
2459 log_warning_unit(UNIT(s)->id,
2460 "%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2462 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START,
2463 SPECIAL_REBOOT_TARGET, JOB_REPLACE,
2464 true, &error, NULL);
2466 log_error_unit(UNIT(s)->id,
2467 "Failed to reboot: %s.", bus_error(&error, r));
2468 dbus_error_free(&error);
2474 case SERVICE_START_LIMIT_REBOOT_FORCE:
2475 log_warning_unit(UNIT(s)->id,
2476 "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2477 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2480 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2481 log_warning_unit(UNIT(s)->id,
2482 "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2484 reboot(RB_AUTOBOOT);
2488 log_error_unit(UNIT(s)->id,
2489 "start limit action=%i", s->start_limit_action);
2490 assert_not_reached("Unknown StartLimitAction.");
2496 static int service_start(Unit *u) {
2497 Service *s = SERVICE(u);
2502 /* We cannot fulfill this request right now, try again later
2504 if (s->state == SERVICE_STOP ||
2505 s->state == SERVICE_STOP_SIGTERM ||
2506 s->state == SERVICE_STOP_SIGKILL ||
2507 s->state == SERVICE_STOP_POST ||
2508 s->state == SERVICE_FINAL_SIGTERM ||
2509 s->state == SERVICE_FINAL_SIGKILL)
2512 /* Already on it! */
2513 if (s->state == SERVICE_START_PRE ||
2514 s->state == SERVICE_START ||
2515 s->state == SERVICE_START_POST)
2518 /* A service that will be restarted must be stopped first to
2519 * trigger BindsTo and/or OnFailure dependencies. If a user
2520 * does not want to wait for the holdoff time to elapse, the
2521 * service should be manually restarted, not started. We
2522 * simply return EAGAIN here, so that any start jobs stay
2523 * queued, and assume that the auto restart timer will
2524 * eventually trigger the restart. */
2525 if (s->state == SERVICE_AUTO_RESTART)
2528 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2530 /* Make sure we don't enter a busy loop of some kind. */
2531 r = service_start_limit_test(s);
2533 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2537 s->result = SERVICE_SUCCESS;
2538 s->reload_result = SERVICE_SUCCESS;
2539 s->main_pid_known = false;
2540 s->main_pid_alien = false;
2541 s->forbid_restart = false;
2543 service_enter_start_pre(s);
2547 static int service_stop(Unit *u) {
2548 Service *s = SERVICE(u);
2552 /* Don't create restart jobs from here. */
2553 s->forbid_restart = true;
2556 if (s->state == SERVICE_STOP ||
2557 s->state == SERVICE_STOP_SIGTERM ||
2558 s->state == SERVICE_STOP_SIGKILL ||
2559 s->state == SERVICE_STOP_POST ||
2560 s->state == SERVICE_FINAL_SIGTERM ||
2561 s->state == SERVICE_FINAL_SIGKILL)
2564 /* A restart will be scheduled or is in progress. */
2565 if (s->state == SERVICE_AUTO_RESTART) {
2566 service_set_state(s, SERVICE_DEAD);
2570 /* If there's already something running we go directly into
2572 if (s->state == SERVICE_START_PRE ||
2573 s->state == SERVICE_START ||
2574 s->state == SERVICE_START_POST ||
2575 s->state == SERVICE_RELOAD) {
2576 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2580 assert(s->state == SERVICE_RUNNING ||
2581 s->state == SERVICE_EXITED);
2583 service_enter_stop(s, SERVICE_SUCCESS);
2587 static int service_reload(Unit *u) {
2588 Service *s = SERVICE(u);
2592 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2594 service_enter_reload(s);
2598 _pure_ static bool service_can_reload(Unit *u) {
2599 Service *s = SERVICE(u);
2603 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2606 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2607 Service *s = SERVICE(u);
2613 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2614 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2615 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2617 if (s->control_pid > 0)
2618 unit_serialize_item_format(u, f, "control-pid", "%lu",
2619 (unsigned long) s->control_pid);
2621 if (s->main_pid_known && s->main_pid > 0)
2622 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2624 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2627 unit_serialize_item(u, f, "status-text", s->status_text);
2629 /* FIXME: There's a minor uncleanliness here: if there are
2630 * multiple commands attached here, we will start from the
2631 * first one again */
2632 if (s->control_command_id >= 0)
2633 unit_serialize_item(u, f, "control-command",
2634 service_exec_command_to_string(s->control_command_id));
2636 if (s->socket_fd >= 0) {
2639 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2642 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2645 if (s->main_exec_status.pid > 0) {
2646 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu",
2647 (unsigned long) s->main_exec_status.pid);
2648 dual_timestamp_serialize(f, "main-exec-status-start",
2649 &s->main_exec_status.start_timestamp);
2650 dual_timestamp_serialize(f, "main-exec-status-exit",
2651 &s->main_exec_status.exit_timestamp);
2653 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2654 unit_serialize_item_format(u, f, "main-exec-status-code", "%i",
2655 s->main_exec_status.code);
2656 unit_serialize_item_format(u, f, "main-exec-status-status", "%i",
2657 s->main_exec_status.status);
2660 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2661 dual_timestamp_serialize(f, "watchdog-timestamp",
2662 &s->watchdog_timestamp);
2664 if (s->exec_context.tmp_dir)
2665 unit_serialize_item(u, f, "tmp-dir", s->exec_context.tmp_dir);
2667 if (s->exec_context.var_tmp_dir)
2668 unit_serialize_item(u, f, "var-tmp-dir", s->exec_context.var_tmp_dir);
2673 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2674 Service *s = SERVICE(u);
2681 if (streq(key, "state")) {
2684 state = service_state_from_string(value);
2686 log_debug_unit(u->id, "Failed to parse state value %s", value);
2688 s->deserialized_state = state;
2689 } else if (streq(key, "result")) {
2692 f = service_result_from_string(value);
2694 log_debug_unit(u->id, "Failed to parse result value %s", value);
2695 else if (f != SERVICE_SUCCESS)
2698 } else if (streq(key, "reload-result")) {
2701 f = service_result_from_string(value);
2703 log_debug_unit(u->id, "Failed to parse reload result value %s", value);
2704 else if (f != SERVICE_SUCCESS)
2705 s->reload_result = f;
2707 } else if (streq(key, "control-pid")) {
2710 if (parse_pid(value, &pid) < 0)
2711 log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
2713 s->control_pid = pid;
2714 } else if (streq(key, "main-pid")) {
2717 if (parse_pid(value, &pid) < 0)
2718 log_debug_unit(u->id, "Failed to parse main-pid value %s", value);
2720 service_set_main_pid(s, (pid_t) pid);
2721 } else if (streq(key, "main-pid-known")) {
2724 b = parse_boolean(value);
2726 log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value);
2728 s->main_pid_known = b;
2729 } else if (streq(key, "status-text")) {
2736 free(s->status_text);
2740 } else if (streq(key, "control-command")) {
2741 ServiceExecCommand id;
2743 id = service_exec_command_from_string(value);
2745 log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
2747 s->control_command_id = id;
2748 s->control_command = s->exec_command[id];
2750 } else if (streq(key, "socket-fd")) {
2753 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2754 log_debug_unit(u->id, "Failed to parse socket-fd value %s", value);
2757 if (s->socket_fd >= 0)
2758 close_nointr_nofail(s->socket_fd);
2759 s->socket_fd = fdset_remove(fds, fd);
2761 } else if (streq(key, "main-exec-status-pid")) {
2764 if (parse_pid(value, &pid) < 0)
2765 log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value);
2767 s->main_exec_status.pid = pid;
2768 } else if (streq(key, "main-exec-status-code")) {
2771 if (safe_atoi(value, &i) < 0)
2772 log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value);
2774 s->main_exec_status.code = i;
2775 } else if (streq(key, "main-exec-status-status")) {
2778 if (safe_atoi(value, &i) < 0)
2779 log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value);
2781 s->main_exec_status.status = i;
2782 } else if (streq(key, "main-exec-status-start"))
2783 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2784 else if (streq(key, "main-exec-status-exit"))
2785 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2786 else if (streq(key, "watchdog-timestamp"))
2787 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2788 else if (streq(key, "tmp-dir")) {
2795 s->exec_context.tmp_dir = t;
2796 } else if (streq(key, "var-tmp-dir")) {
2803 s->exec_context.var_tmp_dir = t;
2805 log_debug_unit(u->id, "Unknown serialization key '%s'", key);
2810 _pure_ static UnitActiveState service_active_state(Unit *u) {
2811 const UnitActiveState *table;
2815 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2817 return table[SERVICE(u)->state];
2820 static const char *service_sub_state_to_string(Unit *u) {
2823 return service_state_to_string(SERVICE(u)->state);
2826 static bool service_check_gc(Unit *u) {
2827 Service *s = SERVICE(u);
2831 /* Never clean up services that still have a process around,
2832 * even if the service is formally dead. */
2833 if (cgroup_good(s) > 0 ||
2834 main_pid_good(s) > 0 ||
2835 control_pid_good(s) > 0)
2838 #ifdef HAVE_SYSV_COMPAT
2846 _pure_ static bool service_check_snapshot(Unit *u) {
2847 Service *s = SERVICE(u);
2851 return !s->got_socket_fd;
2854 static int service_retry_pid_file(Service *s) {
2857 assert(s->pid_file);
2858 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2860 r = service_load_pid_file(s, false);
2864 service_unwatch_pid_file(s);
2866 service_enter_running(s, SERVICE_SUCCESS);
2870 static int service_watch_pid_file(Service *s) {
2873 log_debug_unit(UNIT(s)->id,
2874 "Setting watch for %s's PID file %s",
2875 UNIT(s)->id, s->pid_file_pathspec->path);
2876 r = path_spec_watch(s->pid_file_pathspec, UNIT(s));
2880 /* the pidfile might have appeared just before we set the watch */
2881 log_debug_unit(UNIT(s)->id,
2882 "Trying to read %s's PID file %s in case it changed",
2883 UNIT(s)->id, s->pid_file_pathspec->path);
2884 service_retry_pid_file(s);
2888 log_error_unit(UNIT(s)->id,
2889 "Failed to set a watch for %s's PID file %s: %s",
2890 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2891 service_unwatch_pid_file(s);
2895 static int service_demand_pid_file(Service *s) {
2898 assert(s->pid_file);
2899 assert(!s->pid_file_pathspec);
2901 ps = new0(PathSpec, 1);
2905 ps->path = strdup(s->pid_file);
2911 path_kill_slashes(ps->path);
2913 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2914 * keep their PID file open all the time. */
2915 ps->type = PATH_MODIFIED;
2916 ps->inotify_fd = -1;
2918 s->pid_file_pathspec = ps;
2920 return service_watch_pid_file(s);
2923 static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
2924 Service *s = SERVICE(u);
2928 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2929 assert(s->pid_file_pathspec);
2930 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2932 log_debug_unit(u->id, "inotify event for %s", u->id);
2934 if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
2937 if (service_retry_pid_file(s) == 0)
2940 if (service_watch_pid_file(s) < 0)
2945 service_unwatch_pid_file(s);
2946 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2949 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2950 Service *s = SERVICE(u);
2956 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2957 is_clean_exit_lsb(code, status, &s->success_status))
2958 f = SERVICE_SUCCESS;
2959 else if (code == CLD_EXITED)
2960 f = SERVICE_FAILURE_EXIT_CODE;
2961 else if (code == CLD_KILLED)
2962 f = SERVICE_FAILURE_SIGNAL;
2963 else if (code == CLD_DUMPED)
2964 f = SERVICE_FAILURE_CORE_DUMP;
2966 assert_not_reached("Unknown code");
2968 if (s->main_pid == pid) {
2969 /* Forking services may occasionally move to a new PID.
2970 * As long as they update the PID file before exiting the old
2971 * PID, they're fine. */
2972 if (service_load_pid_file(s, false) == 0)
2976 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2978 if (s->main_command) {
2979 /* If this is not a forking service than the
2980 * main process got started and hence we copy
2981 * the exit status so that it is recorded both
2982 * as main and as control process exit
2985 s->main_command->exec_status = s->main_exec_status;
2987 if (s->main_command->ignore)
2988 f = SERVICE_SUCCESS;
2989 } else if (s->exec_command[SERVICE_EXEC_START]) {
2991 /* If this is a forked process, then we should
2992 * ignore the return value if this was
2993 * configured for the starter process */
2995 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2996 f = SERVICE_SUCCESS;
2999 log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
3001 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
3002 u->id, sigchld_code_to_string(code), status,
3003 strna(code == CLD_EXITED
3004 ? exit_status_to_string(status, EXIT_STATUS_FULL)
3005 : signal_to_string(status)),
3006 "EXIT_CODE=%s", sigchld_code_to_string(code),
3007 "EXIT_STATUS=%i", status,
3010 if (f != SERVICE_SUCCESS)
3013 if (s->main_command &&
3014 s->main_command->command_next &&
3015 f == SERVICE_SUCCESS) {
3017 /* There is another command to *
3018 * execute, so let's do that. */
3020 log_debug_unit(u->id,
3021 "%s running next main command for state %s",
3022 u->id, service_state_to_string(s->state));
3023 service_run_next_main(s);
3027 /* The service exited, so the service is officially
3029 s->main_command = NULL;
3033 case SERVICE_START_POST:
3034 case SERVICE_RELOAD:
3036 /* Need to wait until the operation is
3041 if (s->type == SERVICE_ONESHOT) {
3042 /* This was our main goal, so let's go on */
3043 if (f == SERVICE_SUCCESS)
3044 service_enter_start_post(s);
3046 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3052 case SERVICE_RUNNING:
3053 service_enter_running(s, f);
3056 case SERVICE_STOP_SIGTERM:
3057 case SERVICE_STOP_SIGKILL:
3059 if (!control_pid_good(s))
3060 service_enter_stop_post(s, f);
3062 /* If there is still a control process, wait for that first */
3066 assert_not_reached("Uh, main process died at wrong time.");
3070 } else if (s->control_pid == pid) {
3073 if (s->control_command) {
3074 exec_status_exit(&s->control_command->exec_status,
3075 &s->exec_context, pid, code, status);
3077 if (s->control_command->ignore)
3078 f = SERVICE_SUCCESS;
3081 log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id,
3082 "%s: control process exited, code=%s status=%i",
3083 u->id, sigchld_code_to_string(code), status);
3085 if (f != SERVICE_SUCCESS)
3088 /* Immediately get rid of the cgroup, so that the
3089 * kernel doesn't delay the cgroup empty messages for
3090 * the service cgroup any longer than necessary */
3091 service_kill_control_processes(s);
3093 if (s->control_command &&
3094 s->control_command->command_next &&
3095 f == SERVICE_SUCCESS) {
3097 /* There is another command to *
3098 * execute, so let's do that. */
3100 log_debug_unit(u->id,
3101 "%s running next control command for state %s",
3102 u->id, service_state_to_string(s->state));
3103 service_run_next_control(s);
3106 /* No further commands for this step, so let's
3107 * figure out what to do next */
3109 s->control_command = NULL;
3110 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3112 log_debug_unit(u->id,
3113 "%s got final SIGCHLD for state %s",
3114 u->id, service_state_to_string(s->state));
3118 case SERVICE_START_PRE:
3119 if (f == SERVICE_SUCCESS)
3120 service_enter_start(s);
3122 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3126 if (s->type != SERVICE_FORKING)
3127 /* Maybe spurious event due to a reload that changed the type? */
3130 if (f != SERVICE_SUCCESS) {
3131 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3136 bool has_start_post;
3139 /* Let's try to load the pid file here if we can.
3140 * The PID file might actually be created by a START_POST
3141 * script. In that case don't worry if the loading fails. */
3143 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3144 r = service_load_pid_file(s, !has_start_post);
3145 if (!has_start_post && r < 0) {
3146 r = service_demand_pid_file(s);
3147 if (r < 0 || !cgroup_good(s))
3148 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3152 service_search_main_pid(s);
3154 service_enter_start_post(s);
3157 case SERVICE_START_POST:
3158 if (f != SERVICE_SUCCESS) {
3159 service_enter_stop(s, f);
3166 r = service_load_pid_file(s, true);
3168 r = service_demand_pid_file(s);
3169 if (r < 0 || !cgroup_good(s))
3170 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3174 service_search_main_pid(s);
3176 service_enter_running(s, SERVICE_SUCCESS);
3179 case SERVICE_RELOAD:
3180 if (f == SERVICE_SUCCESS) {
3181 service_load_pid_file(s, true);
3182 service_search_main_pid(s);
3185 s->reload_result = f;
3186 service_enter_running(s, SERVICE_SUCCESS);
3190 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3193 case SERVICE_STOP_SIGTERM:
3194 case SERVICE_STOP_SIGKILL:
3195 if (main_pid_good(s) <= 0)
3196 service_enter_stop_post(s, f);
3198 /* If there is still a service
3199 * process around, wait until
3200 * that one quit, too */
3203 case SERVICE_STOP_POST:
3204 case SERVICE_FINAL_SIGTERM:
3205 case SERVICE_FINAL_SIGKILL:
3206 service_enter_dead(s, f, true);
3210 assert_not_reached("Uh, control process died at wrong time.");
3215 /* Notify clients about changed exit status */
3216 unit_add_to_dbus_queue(u);
3219 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
3220 Service *s = SERVICE(u);
3223 assert(elapsed == 1);
3225 if (w == &s->watchdog_watch) {
3226 service_handle_watchdog(s);
3230 assert(w == &s->timer_watch);
3234 case SERVICE_START_PRE:
3236 log_warning_unit(u->id,
3237 "%s operation timed out. Terminating.", u->id);
3238 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3241 case SERVICE_START_POST:
3242 log_warning_unit(u->id,
3243 "%s operation timed out. Stopping.", u->id);
3244 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3247 case SERVICE_RELOAD:
3248 log_warning_unit(u->id,
3249 "%s operation timed out. Stopping.", u->id);
3250 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3251 service_enter_running(s, SERVICE_SUCCESS);
3255 log_warning_unit(u->id,
3256 "%s stopping timed out. Terminating.", u->id);
3257 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3260 case SERVICE_STOP_SIGTERM:
3261 if (s->kill_context.send_sigkill) {
3262 log_warning_unit(u->id,
3263 "%s stopping timed out. Killing.", u->id);
3264 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3266 log_warning_unit(u->id,
3267 "%s stopping timed out. Skipping SIGKILL.", u->id);
3268 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3273 case SERVICE_STOP_SIGKILL:
3274 /* Uh, we sent a SIGKILL and it is still not gone?
3275 * Must be something we cannot kill, so let's just be
3276 * weirded out and continue */
3278 log_warning_unit(u->id,
3279 "%s still around after SIGKILL. Ignoring.", u->id);
3280 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3283 case SERVICE_STOP_POST:
3284 log_warning_unit(u->id,
3285 "%s stopping timed out (2). Terminating.", u->id);
3286 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3289 case SERVICE_FINAL_SIGTERM:
3290 if (s->kill_context.send_sigkill) {
3291 log_warning_unit(u->id,
3292 "%s stopping timed out (2). Killing.", u->id);
3293 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3295 log_warning_unit(u->id,
3296 "%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.",
3298 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3303 case SERVICE_FINAL_SIGKILL:
3304 log_warning_unit(u->id,
3305 "%s still around after SIGKILL (2). Entering failed mode.", u->id);
3306 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3309 case SERVICE_AUTO_RESTART:
3310 log_info_unit(u->id,
3311 "%s holdoff time over, scheduling restart.", u->id);
3312 service_enter_restart(s);
3316 assert_not_reached("Timeout at wrong time.");
3320 static void service_notify_cgroup_empty_event(Unit *u) {
3321 Service *s = SERVICE(u);
3325 log_debug_unit(u->id, "%s: cgroup is empty", u->id);
3329 /* Waiting for SIGCHLD is usually more interesting,
3330 * because it includes return codes/signals. Which is
3331 * why we ignore the cgroup events for most cases,
3332 * except when we don't know pid which to expect the
3336 case SERVICE_START_POST:
3337 /* If we were hoping for the daemon to write its PID file,
3338 * we can give up now. */
3339 if (s->pid_file_pathspec) {
3340 log_warning_unit(u->id,
3341 "%s never wrote its PID file. Failing.", UNIT(s)->id);
3342 service_unwatch_pid_file(s);
3343 if (s->state == SERVICE_START)
3344 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3346 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3350 case SERVICE_RUNNING:
3351 /* service_enter_running() will figure out what to do */
3352 service_enter_running(s, SERVICE_SUCCESS);
3355 case SERVICE_STOP_SIGTERM:
3356 case SERVICE_STOP_SIGKILL:
3358 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3359 service_enter_stop_post(s, SERVICE_SUCCESS);
3363 case SERVICE_FINAL_SIGTERM:
3364 case SERVICE_FINAL_SIGKILL:
3365 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3366 service_enter_dead(s, SERVICE_SUCCESS, true);
3375 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3376 Service *s = SERVICE(u);
3381 if (s->notify_access == NOTIFY_NONE) {
3382 log_warning_unit(u->id,
3383 "%s: Got notification message from PID %lu, but reception is disabled.",
3384 u->id, (unsigned long) pid);
3388 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3389 log_warning_unit(u->id,
3390 "%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3391 u->id, (unsigned long) pid, (unsigned long) s->main_pid);
3395 log_debug_unit(u->id,
3396 "%s: Got message", u->id);
3398 /* Interpret MAINPID= */
3399 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3400 (s->state == SERVICE_START ||
3401 s->state == SERVICE_START_POST ||
3402 s->state == SERVICE_RUNNING ||
3403 s->state == SERVICE_RELOAD)) {
3405 if (parse_pid(e + 8, &pid) < 0)
3406 log_warning_unit(u->id,
3407 "Failed to parse notification message %s", e);
3409 log_debug_unit(u->id,
3410 "%s: got %s", u->id, e);
3411 service_set_main_pid(s, pid);
3415 /* Interpret READY= */
3416 if (s->type == SERVICE_NOTIFY &&
3417 s->state == SERVICE_START &&
3418 strv_find(tags, "READY=1")) {
3419 log_debug_unit(u->id,
3420 "%s: got READY=1", u->id);
3422 service_enter_start_post(s);
3425 /* Interpret STATUS= */
3426 e = strv_find_prefix(tags, "STATUS=");
3432 if (!utf8_is_valid(e+7)) {
3433 log_warning_unit(u->id,
3434 "Status message in notification is not UTF-8 clean.");
3440 log_error_unit(u->id,
3441 "Failed to allocate string.");
3445 log_debug_unit(u->id,
3446 "%s: got %s", u->id, e);
3448 free(s->status_text);
3451 free(s->status_text);
3452 s->status_text = NULL;
3456 if (strv_find(tags, "WATCHDOG=1")) {
3457 log_debug_unit(u->id,
3458 "%s: got WATCHDOG=1", u->id);
3459 if (dual_timestamp_is_set(&s->watchdog_timestamp))
3460 service_reset_watchdog(s);
3463 /* Notify clients about changed status or main pid */
3464 unit_add_to_dbus_queue(u);
3467 #ifdef HAVE_SYSV_COMPAT
3469 static int service_enumerate(Manager *m) {
3472 _cleanup_closedir_ DIR *d = NULL;
3473 _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL;
3474 Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
3475 _cleanup_set_free_ Set *shutdown_services = NULL;
3482 if (m->running_as != SYSTEMD_SYSTEM)
3485 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3486 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3490 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3501 if (errno != ENOENT)
3502 log_warning("opendir(%s) failed: %s", path, strerror(errno));
3507 while ((de = readdir(d))) {
3510 if (ignore_file(de->d_name))
3513 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3516 if (strlen(de->d_name) < 4)
3519 a = undecchar(de->d_name[1]);
3520 b = undecchar(de->d_name[2]);
3526 fpath = strjoin(path, "/", de->d_name, NULL);
3532 if (access(fpath, X_OK) < 0) {
3534 if (errno != ENOENT)
3535 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3541 name = sysv_translate_name(de->d_name + 3);
3547 r = manager_load_unit_prepare(m, name, NULL, NULL, &service);
3549 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3553 if (de->d_name[0] == 'S') {
3555 if (rcnd_table[i].type == RUNLEVEL_UP) {
3556 SERVICE(service)->sysv_start_priority_from_rcnd =
3557 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3559 SERVICE(service)->sysv_enabled = true;
3562 r = set_ensure_allocated(&runlevel_services[i],
3563 trivial_hash_func, trivial_compare_func);
3567 r = set_put(runlevel_services[i], service);
3571 } else if (de->d_name[0] == 'K' &&
3572 (rcnd_table[i].type == RUNLEVEL_DOWN)) {
3574 r = set_ensure_allocated(&shutdown_services,
3575 trivial_hash_func, trivial_compare_func);
3579 r = set_put(shutdown_services, service);
3586 /* Now we loaded all stubs and are aware of the lowest
3587 start-up priority for all services, not let's actually load
3588 the services, this will also tell us which services are
3589 actually native now */
3590 manager_dispatch_load_queue(m);
3592 /* If this is a native service, rely on native ways to pull in
3593 * a service, don't pull it in via sysv rcN.d links. */
3594 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3595 SET_FOREACH(service, runlevel_services[i], j) {
3596 service = unit_follow_merge(service);
3598 if (service->fragment_path)
3601 r = unit_add_two_dependencies_by_name_inverse(
3602 service, UNIT_AFTER, UNIT_WANTS,
3603 rcnd_table[i].target, NULL, true);
3608 /* We honour K links only for halt/reboot. For the normal
3609 * runlevels we assume the stop jobs will be implicitly added
3610 * by the core logic. Also, we don't really distinguish here
3611 * between the runlevels 0 and 6 and just add them to the
3612 * special shutdown target. */
3613 SET_FOREACH(service, shutdown_services, j) {
3614 service = unit_follow_merge(service);
3616 if (service->fragment_path)
3619 r = unit_add_two_dependencies_by_name(
3620 service, UNIT_BEFORE, UNIT_CONFLICTS,
3621 SPECIAL_SHUTDOWN_TARGET, NULL, true);
3630 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3631 set_free(runlevel_services[i]);
3637 static void service_bus_name_owner_change(
3640 const char *old_owner,
3641 const char *new_owner) {
3643 Service *s = SERVICE(u);
3648 assert(streq(s->bus_name, name));
3649 assert(old_owner || new_owner);
3651 if (old_owner && new_owner)
3652 log_debug_unit(u->id,
3653 "%s's D-Bus name %s changed owner from %s to %s",
3654 u->id, name, old_owner, new_owner);
3656 log_debug_unit(u->id,
3657 "%s's D-Bus name %s no longer registered by %s",
3658 u->id, name, old_owner);
3660 log_debug_unit(u->id,
3661 "%s's D-Bus name %s now registered by %s",
3662 u->id, name, new_owner);
3664 s->bus_name_good = !!new_owner;
3666 if (s->type == SERVICE_DBUS) {
3668 /* service_enter_running() will figure out what to
3670 if (s->state == SERVICE_RUNNING)
3671 service_enter_running(s, SERVICE_SUCCESS);
3672 else if (s->state == SERVICE_START && new_owner)
3673 service_enter_start_post(s);
3675 } else if (new_owner &&
3677 (s->state == SERVICE_START ||
3678 s->state == SERVICE_START_POST ||
3679 s->state == SERVICE_RUNNING ||
3680 s->state == SERVICE_RELOAD)) {
3682 /* Try to acquire PID from bus service */
3683 log_debug_unit(u->id,
3684 "Trying to acquire PID from D-Bus name...");
3686 bus_query_pid(u->manager, name);
3690 static void service_bus_query_pid_done(
3695 Service *s = SERVICE(u);
3700 log_debug_unit(u->id,
3701 "%s's D-Bus name %s is now owned by process %u",
3702 u->id, name, (unsigned) pid);
3704 if (s->main_pid <= 0 &&
3705 (s->state == SERVICE_START ||
3706 s->state == SERVICE_START_POST ||
3707 s->state == SERVICE_RUNNING ||
3708 s->state == SERVICE_RELOAD))
3709 service_set_main_pid(s, pid);
3712 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3717 /* This is called by the socket code when instantiating a new
3718 * service for a stream socket and the socket needs to be
3721 if (UNIT(s)->load_state != UNIT_LOADED)
3724 if (s->socket_fd >= 0)
3727 if (s->state != SERVICE_DEAD)
3731 s->got_socket_fd = true;
3733 unit_ref_set(&s->accept_socket, UNIT(sock));
3735 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3738 static void service_reset_failed(Unit *u) {
3739 Service *s = SERVICE(u);
3743 if (s->state == SERVICE_FAILED)
3744 service_set_state(s, SERVICE_DEAD);
3746 s->result = SERVICE_SUCCESS;
3747 s->reload_result = SERVICE_SUCCESS;
3749 RATELIMIT_RESET(s->start_limit);
3752 static int service_kill(Unit *u, KillWho who, int signo, DBusError *error) {
3753 Service *s = SERVICE(u);
3754 return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
3757 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3758 [SERVICE_DEAD] = "dead",
3759 [SERVICE_START_PRE] = "start-pre",
3760 [SERVICE_START] = "start",
3761 [SERVICE_START_POST] = "start-post",
3762 [SERVICE_RUNNING] = "running",
3763 [SERVICE_EXITED] = "exited",
3764 [SERVICE_RELOAD] = "reload",
3765 [SERVICE_STOP] = "stop",
3766 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3767 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3768 [SERVICE_STOP_POST] = "stop-post",
3769 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3770 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3771 [SERVICE_FAILED] = "failed",
3772 [SERVICE_AUTO_RESTART] = "auto-restart",
3775 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3777 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3778 [SERVICE_RESTART_NO] = "no",
3779 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3780 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3781 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3782 [SERVICE_RESTART_ALWAYS] = "always"
3785 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3787 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3788 [SERVICE_SIMPLE] = "simple",
3789 [SERVICE_FORKING] = "forking",
3790 [SERVICE_ONESHOT] = "oneshot",
3791 [SERVICE_DBUS] = "dbus",
3792 [SERVICE_NOTIFY] = "notify",
3793 [SERVICE_IDLE] = "idle"
3796 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3798 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3799 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3800 [SERVICE_EXEC_START] = "ExecStart",
3801 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3802 [SERVICE_EXEC_RELOAD] = "ExecReload",
3803 [SERVICE_EXEC_STOP] = "ExecStop",
3804 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3807 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3809 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3810 [NOTIFY_NONE] = "none",
3811 [NOTIFY_MAIN] = "main",
3812 [NOTIFY_ALL] = "all"
3815 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3817 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3818 [SERVICE_SUCCESS] = "success",
3819 [SERVICE_FAILURE_RESOURCES] = "resources",
3820 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3821 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3822 [SERVICE_FAILURE_SIGNAL] = "signal",
3823 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3824 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3825 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3828 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3830 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3831 [SERVICE_START_LIMIT_NONE] = "none",
3832 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3833 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3834 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3836 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3838 const UnitVTable service_vtable = {
3839 .object_size = sizeof(Service),
3846 .private_section = "Service",
3847 .exec_context_offset = offsetof(Service, exec_context),
3848 .cgroup_context_offset = offsetof(Service, cgroup_context),
3850 .init = service_init,
3851 .done = service_done,
3852 .load = service_load,
3854 .coldplug = service_coldplug,
3856 .dump = service_dump,
3858 .start = service_start,
3859 .stop = service_stop,
3860 .reload = service_reload,
3862 .can_reload = service_can_reload,
3864 .kill = service_kill,
3866 .serialize = service_serialize,
3867 .deserialize_item = service_deserialize_item,
3869 .active_state = service_active_state,
3870 .sub_state_to_string = service_sub_state_to_string,
3872 .check_gc = service_check_gc,
3873 .check_snapshot = service_check_snapshot,
3875 .sigchld_event = service_sigchld_event,
3876 .timer_event = service_timer_event,
3877 .fd_event = service_fd_event,
3879 .reset_failed = service_reset_failed,
3881 .notify_cgroup_empty = service_notify_cgroup_empty_event,
3882 .notify_message = service_notify_message,
3884 .bus_name_owner_change = service_bus_name_owner_change,
3885 .bus_query_pid_done = service_bus_query_pid_done,
3887 .bus_interface = "org.freedesktop.systemd1.Service",
3888 .bus_message_handler = bus_service_message_handler,
3889 .bus_invalidating_properties = bus_service_invalidating_properties,
3890 .bus_set_property = bus_service_set_property,
3891 .bus_commit_properties = bus_service_commit_properties,
3893 .can_transient = true,
3895 #ifdef HAVE_SYSV_COMPAT
3896 .enumerate = service_enumerate,
3898 .status_message_formats = {
3899 .starting_stopping = {
3900 [0] = "Starting %s...",
3901 [1] = "Stopping %s...",
3903 .finished_start_job = {
3904 [JOB_DONE] = "Started %s.",
3905 [JOB_FAILED] = "Failed to start %s.",
3906 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3907 [JOB_TIMEOUT] = "Timed out starting %s.",
3909 .finished_stop_job = {
3910 [JOB_DONE] = "Stopped %s.",
3911 [JOB_FAILED] = "Stopped (with error) %s.",
3912 [JOB_TIMEOUT] = "Timed out stopping %s.",